3 This file is part of the Crypto-avr-lib/microcrypt-lib.
4 Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
31 #define __LITTLE_ENDIAN__
37 #define SHA256_HASH_BITS 256
38 #define SHA256_HASH_BYTES (SHA256_HASH_BITS/8)
39 #define SHA256_BLOCK_BITS 512
40 #define SHA256_BLOCK_BYTES (SHA256_BLOCK_BITS/8)
43 * \brief sha256 context type
51 typedef uint8_t sha256_hash_t[SHA256_HASH_BYTES];
53 void sha256_init(sha256_ctx_t *state);
55 void sha256_nextBlock (sha256_ctx_t *state, const void* block);
56 void sha256_lastBlock(sha256_ctx_t *state, const void* block, uint16_t length_b);
58 void sha256_ctx2hash(sha256_hash_t *dest, const sha256_ctx_t *state);
63 void sha256(sha256_hash_t *dest, const void* msg, uint32_t length_b);
64 uint32_t change_endian32(uint32_t x);